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Old 01-19-2017, 10:22 AM   #29
Anker
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Join Date: Sep 2016
Location: Stow, MA
Posts: 918
Garage
Getting 10HP from an underdrive pulley is a wet dream. Driving the accessories at full tilt requires less than 10HP and the UDP just reduces the load by a fraction no larger than the ratio of the regular to UDP pulley's diameters.

In actual fact, once the water pump starts cavitating it requires less power to run. The generator drag is close to proportional to the number of amps it delivers, and they don't go up by more than a small amount with speed. The AC is turned off on the track, I am sure, and the power steering pump also draws the amount of power required to turn the wheels.

So happy dreams!
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